
variants of the key chain
A classic key chain is a double metal ring with two ends on opposite sides. To put a key and a key chain together or to separate them, the two rings of the chain must be lifted apart slightly. In addition to this standard version, there are also versions with a snap fastener , which are particularly easy and comfortable to use.

The keychain and its history
The oldest evidence of the use of locks and key chains is over 3,000 years old and comes from Egypt. The key hanging devices commonly used at that time could be described as very simple precursors of today's key chains.
A further development took place under the Romans, who placed greater emphasis on the aesthetic design of the now extremely decorative key rings. Today, examples from this period can be seen in museums all over the world.
The key chain was less important in the Middle Ages, as it was more common at that time to hide possessions rather than lock them away.
However, from 1778 onwards, with Robert Barron's invention of a very secure locking mechanism, the popularity of key chains increased again.
The versatile and practical accessory experienced a boom in the 1940s, when, in addition to the classic metal versions, plastic models also came onto the market in large quantities.
Precious metals
Jewellery lexicon
Chains for pendants
Rings with diamonds